I have a Boba 3G and have had success BF in it. I just slightly loosen the bottom strap to drop it down some, then loosen the underarm straps to give a little more space for the baby's head for placement, and I slide the carrier to the side a little to whichever side I breastfeed on. I can use the hood as a cover if I don't have anything else, although it does not provide complete coverage if you are modest like me. Make sure whatever carrier you BF in you are able to keep an eye on the baby's airway passages.